Comber, Norman Mederson,  1888-1953 <br/><br/>
An introductionh to the scientific study of the soil  / 
Norman M. Comber 
 - London:  Edward Arnold,  1948 
 - vii, 206p. ;  18 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Fertilizers